Now playing Next no comment Ceremony marks anniversary of Nagasaki atomic bomb The Japanese city of Nagasaki marked the 71st anniversary of its atomic bombing on Tuesday, as the local mayor called on the world to abolish nuclear weapons. 09/08/2016
Now playing Next Iran Iran hangs nuclear scientist over US 'treason' Iran has executed a nuclear scientist accused of providing the US with information about the country's nuclear programme. 07/08/2016
Now playing Next United Kingdom British lawmakers back renewal of Trident nuclear deterrent British MPs voted on Monday to renew the country’s nuclear weapons system, by a majority of 472 votes to 117. 19/07/2016
Now playing Next world news Britain to hold vote on Trident nuclear deterrent David Cameron has said he will hold a parliamentary vote later this month over whether to renew Britain’s nuclear deterrent. 09/07/2016
Now playing Next world news US sanctions North Korean leader over human rights abuses The US has imposed sanctions on North Korean leader Kim Jong Un for the first time, accusing him of human rights abuses. 07/07/2016
Now playing Next USA Fewer nuclear weapons but a far cry from disarmament The nine “nuclear states” are reducing the number of warheads but there is a new race to modernize the nuclear arsenal. 13/06/2016
Now playing Next world news North Korea missile test off east coast 'fails', says Seoul North Korea is said to have attempted to carry out another ballistic missile test which failed. 31/05/2016
Now playing Next Japan Peace and protest in Hiroshima Thousands gather to witness the first visit by an incumbent US president to the site of the world's first atomic bombing at Hiroshima. 27/05/2016
Now playing Next USA US nuclear arsenal controlled on 1970s floppy disks The US nuclear weapons systems are still run on technology from the 1970s, the Government Accountability Office has revealed. 26/05/2016
Now playing Next North Korea North Korea says it continues to develop its nuclear weapons capability Seoul dismisses the suggestion of military talks from Pyongang as "meaningless" amid speculation about a fifth nuclear test. 09/05/2016
Now playing Next North Korea North Korea talks of nuclear restraint and better relations with other countries North Korea’s leader has reportedly said the country will not use nuclear weapons unless its sovereignty is infringed by others. According to state 08/05/2016
Now playing Next no comment Kim Jong Un addresses North Korea party congress North Korea on Friday opened the first full congress of its ruling party since 1980 with leader Kim Jong Un speaking behind closed doors to thousands 07/05/2016
Now playing Next Korea North Korea 'fires ballistic missile from submarine' North Korea looks to have fired a submarine-launched ballistic missile on Saturday off its east coast. The reports come from South Korea’s military 23/04/2016
Now playing Next Japan John Kerry lays flowers at Hiroshima memorial John Kerry paid his respects to the victims of the 1945 American nuclear attack on the Japanese city of Hiroshima on Monday. By doing so he became 11/04/2016
Now playing Next world news Japan PM slams North Korea ballistic missile engine test The Japanese prime minister has strongly condemned North Korea’s reported testing of an engine for an intercontinental ballistic missile. Shinzo Abe 10/04/2016
Now playing Next USA World leaders look at ways to boost nuclear security during talks in Washington At a nuclear security summit in the US, North Korea's nuclear ambitions were high on the agenda. 01/04/2016
Now playing Next North Korea North Korea fires ballistic missile into sea At least one ballistic missile was reportedly fired by North Korea on Friday in a further sign of defiance by its leader Kim Jong Un in the face of 18/03/2016
Now playing Next world news North Korea nuclear warhead test 'soon' reports KCNA North Korea will test a nuclear warheads and test-launch ballistic missiles capable of carrying nuclear warheads soon, according to the country’s 15/03/2016
Now playing Next North Korea US says it takes North Korea nuclear threats seriously The United States says it takes North Korea’s threats to use nuclear weapons seriously. Washington has urged Pyongyang to halt provocations 08/03/2016
Now playing Next world news Kim Jong-un orders North Korea to ready nuclear weapons for use 'at any time' North Korea’s leader Kim Jong-un has ordered his country’s military to be ready to use nuclear weapons at ‘any time’ according the the communist 04/03/2016